Quoin



M. 0. COOPER.

QUOIN. APPLICATION FILED JAN.23, 1922.

Patented Nov. 7, 1922;

III- I,

WITNESSES 4 TTORIVF S Patented Nov. 7, 1922 sTA i,ait4,875:

EQEi

MATTHEW O. CO01ER, OF NEW YORK, N. Y.

QUOIN.

Application filed January 23, 1922.

To aZZ whom 2'? may concern:

Be it known that I, MATTHEW U. Coornn, a citizen of the United States,and a resident of the city of New York, borough of Queens, in the countyof Queens and State of New York, have invented a new and Improved Quoin,of which the following is a full, clear, and exact description.

This invention relates to improvements in printers quoins, the principalobject of the invention being to provide a device of this character,comprising the usual pair of coacting wedge members so constructed thatthe wedge members are positively held against accidental slipping orrelative movement in any direction.

A further object is to provide a quoin in which the wedge members areprevented from coming apart so that there is no danger of losing onepart of the quoin and no necessity for matching up the various wedgemembers when it becomes necessary to use a quoin.

A still further object is to provide a device of this character, whichwill be simple and practical in construction, strong, durable andefficient in use, and comparatively inexpensive to manufacture.

lVith these and other objects in view, the invention consists in certainnovel features of construction and combinations and arrangements ofparts as will be more fully hereinafter described and. pointed out inthe claims.

In the accompanying drawings:

Figure 1 is a View in side elevation of my improved quoin, parts beingbroken away and in section for clearness;

Figure 2 is a plan view of the wedge member 2;

, Figure 3 is an enlarged View in section on the line 3-3 of Figure 1;

Figure 4 is an end view of the wedge member 2; and

Figure 5 is a perspective view of one of the locking devices.

Referring in detail to the drawings, my improved quoin includes a pairof wedge members 1 and 2, provided with centrally disposedlongitudinally extending ribs 3 on their adjacent faces. Theintermediate portions of the wedge members are provided at each side ofthe ribs with the usual rounded key-receiving teeth 4 adapted to receivea conventional ype at key t efie t relative Serial No. 531,180,

longitudinal movement of the wedges. Rails 13116 secured upon themeeting faces of the r1 s 3.

The rails 5 are slightly wider than the ribs to which they are attachedby suitable securing devices, such as 6, and the edges of the railswhich extend beyond the edges of the ribs are corrugated or toothed, asindicated at 7, for a purpose which will hereinafter appear.

The head 8 of each wedge is formed with a pair of extensions 9straddling the rails and with inwardly presented lugs 10 overlying therails and spaced a sufficient distance apart to conveniently accommodatethe ribs 3. The lugs 10 serve to positively prelgent relative separationof the wedge memers.

It has been heretofore noted that the principal object of the inventionwas to provide means for preventing accidental longitudinal movement ofthe wedges'relative to each other. With this end in view, a pair ofsubstantially U-shaped members 11 are provided. These members aresecured in the heads 8 of the wedges, the intermediate portions of, themembers being secured to the ends of the ribs 3 and being recessed, asinclicated at 13. The recesses 13 in the intermediate portions of themembers 11 serve to accommodate the rails 5 of the opposite wedgemembers. The U-shaped locking .members 11 each include a pair ofcorrugated spring arms 14 extending inwardly from the heads of thewedges and embracing the rails 5.

It is of course to be understood that the corrugated arms 14: areshaped. in accordance with the corrugations or teeth 7 of the rails. Thearms are pressed by their own resiliency into embracing relationshipwith the two rails and serve to positively prevent accidentallongitudinal movement of the wedges relative to each other. The springarms 14 do not hold the wedge members against movement when a key isinserted to actuate the same, but are sufficiently strong to retard themovement of the wedges when a key is applied and to absolutely preventaccidental movement thereof.

A. pin 15 carried by one of the ribs 3, is engageable with theextensions 9 of the head of the opposite wedge member to limitlongitudinal movement of the members in one direction and the two headsengage each other to it long udinal movement in the other direction.Relative separation of the wedges is prevented in the mannerhereinbefore described.

I prefer to make the wedge members of malleable iron, the railsof casehardened steel and the locking members of spring steel, but the materialfrom which the wedges are made, can of course, be varied to suit thetrade.

Although I have illustrated one of the preferredembodiments of myinvention, it will be apparent that various slight changes andalterations migl'it be made in the general form and arrangement of theparts described Without departing from the invention, and hence I do notwish to limit myself to the precise details set forth. but shallconsider myself at liberty to make such slight changes and alterationsas fairly fall within the spirit and scope of the appended claims.

I claim:

1. In a quoin, a pair of coacting wedge members, longitudinal ribs onthe members engaging rails mounted on the ribs, and means engageablewiththe rails preventing accidental longitudinal movement of said members,said rails including corrugated edges projecting beyond the edges of theribs, said means comprising spring arms engageable with the edges of therails.

2. In a quoin, a pair of coacting wedge members, longitudinal ribs onthe members engaging rails mounted on the ribs, and means engageablewith the rails preventing accidental longitudinal movement of saidmembers, said rails including corrugated edges projecting beyond theedges of the ribs, said means comprising spring arms engageable with theedges of the rails, and said arms being corrugated in conformity withthe corrugated edges of the rails.

3. A quoin'comprising a pair of coacting wedge members, longitudinalribs on the members, rails mounted on the meeting faces of the ribs andex'ending beyond the edges of the ribs, and heads on the wedges including means engaging the rails to prevent relative separation of the Wedgemembers.

at. A quoin comprising a pair of coactin'" wed 'e members, longitudinalribs on the members, rails mounted on the meeting faces of the ribs andextending beyond the edges of the ribs, heads on the wedges includingmeans engaging the rails to prevent relative separation of the Wedgemembers, and means holding the wedges against accidental relativelongitudinal movement.

A quoin comprising a pair of coacting Wedge members, longitudinal ribson the members, rails mounted on the meeting faces of the ribs andextending beyond the edges of the ribs, heads on the wedges includingmeans engaging the rails to prevent relative separation of the wedgemembers, and means holding the wedges against accidental relativelongitudinal movement, said means comprising U-shaped members fixed attheir intermediate portions to the ends of the ribs, and includingspring arms straddling and engaging the rails.

6. A quoin comprising a pair of coacting Wedge members, longitudinalribs on the members, rails mounted on the meeting faces of the ribs andextending beyond the'edges of the ribs, heads on the wedges includingmeans engaging the rails to prevent relative separation of the wedgemembers,- and means holding the wedges against accidental relativelongitudinal movement, said means comprising U-shaped members fixed attheir intermediate portions to the ends of the ribs, and includingspringarms straddling and engaging the rails, and similar corrugationson the rails and arms aiding the holding action of the arms,

MATTHEW O. COOPER.

